Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754415Ab3HWDsD (ORCPT ); Thu, 22 Aug 2013 23:48:03 -0400 Received: from intranet.asianux.com ([58.214.24.6]:33121 "EHLO intranet.asianux.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754096Ab3HWDsB (ORCPT ); Thu, 22 Aug 2013 23:48:01 -0400 X-Spam-Score: -101.0 Message-ID: <5216DB33.80404@asianux.com> Date: Fri, 23 Aug 2013 11:46:59 +0800 From: Chen Gang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Steffen Klassert CC: linux-crypto@vger.kernel.org, "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v2] kernel/padata.c: share code between CPU_ONLINE and CPU_DOWN_FAILED, same to CPU_DOWN_PREPARE and CPU_UP_CANCELED References: <5212E5E4.8010408@asianux.com> <5212E61F.7010602@asianux.com> <20130822051122.GB26773@secunet.com> <5215A134.90607@asianux.com> <20130822060503.GC26773@secunet.com> <5215B319.3020908@asianux.com> In-Reply-To: <5215B319.3020908@asianux.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2174 Lines: 77 On 08/22/2013 02:43 PM, Chen Gang wrote: > Share code between CPU_ONLINE and CPU_DOWN_FAILED, same to > CPU_DOWN_PREPARE and CPU_UP_CANCELED. > > It will fix 2 bugs: > > "not check the return value of __padata_remove_cpu() and __padata_add_cpu()". > "need add 'break' between CPU_UP_CANCELED and CPU_DOWN_FAILED". > Do we need more details descriptions ? If so, could Steffen give more expert details information ? Thanks. > > Signed-off-by: Chen Gang > --- > kernel/padata.c | 20 ++++---------------- > 1 files changed, 4 insertions(+), 16 deletions(-) > > diff --git a/kernel/padata.c b/kernel/padata.c > index 072f4ee..2f0037a 100644 > --- a/kernel/padata.c > +++ b/kernel/padata.c > @@ -846,6 +846,8 @@ static int padata_cpu_callback(struct notifier_block *nfb, > switch (action) { > case CPU_ONLINE: > case CPU_ONLINE_FROZEN: > + case CPU_DOWN_FAILED: > + case CPU_DOWN_FAILED_FROZEN: > if (!pinst_has_cpu(pinst, cpu)) > break; > mutex_lock(&pinst->lock); > @@ -857,6 +859,8 @@ static int padata_cpu_callback(struct notifier_block *nfb, > > case CPU_DOWN_PREPARE: > case CPU_DOWN_PREPARE_FROZEN: > + case CPU_UP_CANCELED: > + case CPU_UP_CANCELED_FROZEN: > if (!pinst_has_cpu(pinst, cpu)) > break; > mutex_lock(&pinst->lock); > @@ -865,22 +869,6 @@ static int padata_cpu_callback(struct notifier_block *nfb, > if (err) > return notifier_from_errno(err); > break; > - > - case CPU_UP_CANCELED: > - case CPU_UP_CANCELED_FROZEN: > - if (!pinst_has_cpu(pinst, cpu)) > - break; > - mutex_lock(&pinst->lock); > - __padata_remove_cpu(pinst, cpu); > - mutex_unlock(&pinst->lock); > - > - case CPU_DOWN_FAILED: > - case CPU_DOWN_FAILED_FROZEN: > - if (!pinst_has_cpu(pinst, cpu)) > - break; > - mutex_lock(&pinst->lock); > - __padata_add_cpu(pinst, cpu); > - mutex_unlock(&pinst->lock); > } > > return NOTIFY_OK; > -- Chen Gang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/